Paper machinery



- Nov. 24, 1936. A. H. STANDLEY 2,062,233

PAPER MACHINERY Filed Oct 19, 19 54 3 Sheets-Sheet 1 A. H. STANDLEY2,062,238

PAPER MACHINERY Nov. 24, 1936.

Filed Oct. 19, 19:54 3 Sheets-Sheet 2 Nov. 24, 1936. A. H. STANDt-EYPAPER MACHINERY 3 Sheets-Sheet s Filed Oct. 19, 1934 Patented Nov. 24,1936 -UNITED STATES PATENT OFFICE mrna mcnnvanr Application October 19,1934, Serial No. 749,126

Claims.

This invention relates to paper machinery, and more particularly to theprovision of a suction roll for treating the working surface of thecarrier felts employed in conveying the paper web through papermachinery.

Aniinportant object of the invention is the provision in a constructionof this character of an arrangement such that a very light roll offeringlow friction resistance may be produced and o the roll may be soarranged that the shell therefor the purpose of illustration, I haveshown a preferred embodiment of my invention, and wherein:

Fig. 1 is a semi-diagrammatic view of the press section of a papermachine illustratingthe use of suction felt rolls therein;

Fig. 2 is a side elevation partially in section of the felt roll;

Fig. 3 is an end elevation thereof;

Fig. 4 is a section on the line 44 of Fig. 2;

Fig. 5 is a section on the line 55 of Fig. 2;

Fig. 6 is a section on the line 6-6 of Fig. 2;

Fig. '7 is a section on the line 1-4 of Fig. 2;

Fig. 8 is aperspective view of the suction box 35 collar; and

bear upon one face, hereinafter referred to as the working face of thepaper web W formed in the machine. In accordance with my invention, Iapply against this working face the rotating shell I2 of what I term asuction felt roll IS, the roll being so disposed with relation to thefelt ll 50 by means of'guide rolls that the suction box area It of theroll is completely covered by the felt which should, as a matter offact, well lap this suction area at opposite sides thereof. The shell I3is of light construction hereinafter more particularly described, andarranged to rotate freely upon its axis. The suction exerted through thesuction box It holds the traveling felt firmly against the surface ofthe shell during its passage over the suction area with the result thatthe felt provides the drive for the roll. Since, however, the felt lapsat opposite sides of the suction area, there is no direct pull upon thefelt due to suction action, other than that pull which is exertedthrough the felt and has a cleaning action thereon. In addition to itscleaning, this suction action tends to free the surface fibre of thefelt and restore it to its normal condition.

The form of roll herein illustrated comprises a light shell I! havingheads l5 at its opposite ends, eachhead having a hollow trunnion l6mounted for rotation in a bearing H. The bearing I1 is in turn mountedin a bearing holder [8, and this bearing holder is mounted in a bearingyoke l9 within which it may be rotated. The bearing holder is held inany desired rotatably adjusted position by means of a locating bolt 20engaging in a selected one of a circumferential series of sockets 2|formed in the periphery of the bearing holder. The bearing holder has atubular extension 22 at its out-bored end, this tubular extension, asmore clearly shown in Fig. 4, having an internal bore formed withdiametrically-opposed flats 23. The suction box generally designated at24 has a tubular extension 25. the exterior of which is formed withGenesponding flats 26 adapted to engage against the flats 23 and thushold the suction box. against rotation with relation to the bearingholder so that the suction box may be secured in any of a number ofadjusted positions which are determined by adjustment of this bearingholder. The position of the tubular extension in a direction parallel tothe flats is determined by means of adjusting set screws 21 which extendthrough the wall of the tubular extension 22 and engage the tubularextension of the suction box. While the contact just described may be adirect contact, it is preferred that the suction box extension haveapplied thereto a collar 28 upon which the flats are directly formed,this collar being secured in the present'illustration by means of setscrews 29. Obviously, by rotatable adjustment of the collar withrelation to the suction box, still further adjustment of the position ofthe box may be had. The tubular extension at one end of the suction boxis merely capped, as indicated at 30, while the other end thereofreceives an elbow fitting 3!. Between this fitting and collar a softpacking 32 surrounds the extension and is maintained under compression,so that the adjustment of the box which would disturb the threadedconnection between the elbow 3| and the extension 25 will not permit ofleakage. The general construction of the suction box proper correspondsin great measure to that of the ordinary suction roll, comprising achamber, the longitudinal side walls of which are equipped withspring-pressed packing strips 33 of bakelite with some similar materialhaving a low coeflicient of friction and adapted to engage the innersurface of the shell I2 and end-packing deckles 34 of similar materialto the packing strips 33 which are adjustable through rotatable screws35 mounted at their outbored endsin the cap 30 or fitting and at theirinbored ends in bearings 38 carried by the lower wall of the suctionbox. The arrangement just described permits of all necessary adjustmentof the roll which is, of course, not as exacting as the adjustment ofrollsactually employed with the sheet: while the mounting and generalconstruction provide such a light-weight construction that the drag uponthe felt is reduced to a minimum and no injurious effects areexperienced.

In Figs. 9 and 10 the suction felt roll I is shown as applied to thepick-up felt Ila and top felt D of the wet end of the machine. While inthe several diagrammatic illustrations provided the felt rolls have beenshown in particular locations, it will be obvious that the particularlocation is a matter of choice, and the suction felt roll may be appliedto the felt at any convenient point in its inoperative travel, or thatpart of its travel in which it does not support or contact the paperweb.

Since the construction is capable of modification without departing fromthe spirit of my invention, I do not wish to be understood as limitingmyself thereto except as hereinafter claimed.

I claim:

1. Paper-making apparatus, including a traveling endless felt supportingon its operative travel and upon one face thereof a paper web in theprocess of formation, and a light suction roll directly engaging andexerting suction action on said face of the felt during the returninoperative travel of the felt, said roll comprising a light perforatedshell supported on anti-friction bearings and driven at the same speedas, and only by the travel of the felt thereabout, said roll being of awidth equal to the width of the felt and being held against movementtransversely of the felt, the engagement of the felt with the roll beingthrough the pull of the felt alone.

2. Paper-making apparatus, including a traveling endless felt supportingon its operative travel and upon one face thereof a paper web in theprocess of formation, and a light suction roll directly engaging andexerting suction action on said face of the felt during the returninoperative travel of the felt, said roll comprising a light perforatedshell supported on anti-friction bearings and driven at the same speedas, and only by the travel of the felt thereabout, the contact of thefelt with the roll extending beyond the trailing edge of the suction boxof the roll, said roll being of a width equal to the width of the feltand being held against movement transversely of the felt, the engagementof the felt with the roll being through the pull of the felt alone.

3. Apparatus of the type described, comprising a press, an endless feltpassing therethrough and adapted to support a paper web on one facethereof during operative travel of the felt and a light suction rolldirectly engaging and exerting suction action on said face of the feltduring the return inoperative travel of the felt, said roll 'comprisinga light perforated shell supported on antifriction bearings and drivenat the same speed, as, and only by the travel of the felt thereabout,said roll being of a width equal to the width of the felt and being heldagainst movement transversely of the felt, the engagement of the feltwith the roll being through the pull of the felt alone.

4. Apparatus of the type described, comprising a press, an endless feltpassing therethrough and adapted to support a paper web on one facethereof during operative travel of the felt and a light suction rolldirectly engaging and exerting suction action on said face of the feltduring the return inoperative travel of the felt, said roll comprising alight perforated shell supported on anti-friction bearings and driven atthe same speed as, and only by the travel of the felt thereabout, theengagement of the felt with the roll continuing beyond the trailing edgeof the suction box of the roll,- said roll being of a width equal to thewidth of the felt and being held against movement transversely of thefelt, the engagement of the felt with the rollbeing through the pull ofthe felt alone.

5. In a suction roll for the purpose described, a light shell havinghollow trunnions at its opposite ends, bearings rotatably receiving saidshell,

rotatably adjustable supports for said bearings, and a suction box forthe shell supported by said bearing supports, said bearing supports andsuction box having engagement preventing relative rotation thereof whilepermitting diametral adjustment of the suction box in the shell.

ALBERT H. STANDLEY.

- requiring correction as follows:

CERTIFICATE OF CORRECTION.

Patent No. 2,062,238.

ALBERT H. STANDLEYQ- It is hereby certified that error appears in theabove numbered patent In the grant, lines 1, 2 and 13, and in theheading to the printed specification, lines 3, 4' and 5, the residenceof the inventor and assignee and the name of the assignee should readDowningtown instead of "Downington" as shown by the records ofassignments in this office; and that the said Letters Patent should beread with these corrections therein that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 2nd day of February, A. D. 1957.

Leslie Frazer (Seal) Acting Commissioner of Patents.

November 24, 1936.

